CN212884278U

CN212884278U - Sheet bending apparatus

Info

Publication number: CN212884278U
Application number: CN202021628852.2U
Authority: CN
Inventors: 张海新
Original assignee: Guiyang Yongqing Instruments and Electronic Science and Technology Co Ltd
Current assignee: Guiyang Yongqing Intelligent Control Technology Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-04-06
Anticipated expiration: 2030-08-07

Abstract

The utility model provides a sheet metal bending apparatus, including base, crooked lever, fixed dabber, pin, arbitrary one in fixed dabber and the pin is established on the base, and another is established on crooked lever, and the cooperation is connected between fixed dabber and the pin, be equipped with the baffle on the base, be equipped with rotatory last pressure shaft of crooked lever. The bending device can be used for bending the thin plate, and only one time of rotating the bending lever is needed to finish one workpiece, so that the operation is convenient; just the utility model discloses simple structure, low in cost only needs to change the diameter of fixed dabber, can control work piece bend radius, compares in special mould, greatly reduced the cost. In addition, a bearing is sleeved outside the rotary pressing shaft; the fixed mandrel is fixed on the base, and the pin is fixed on the bending lever; the bending process is smooth, no relative motion exists between the fixed mandrel and the workpiece, and errors are reduced.

Description

Sheet bending apparatus

Technical Field

The utility model relates to a sheet metal machining technical field, concretely relates to sheet metal bending apparatus.

Background

When small-sized workpieces are processed, a thin steel plate is often required to be bent, and the manual bending dimension is not easy to control, so that a special stamping die is generally adopted at the present stage for processing. On one hand, the special die is longer in manufacturing period and higher in cost, and on the other hand, the technology is more complex for the special die to be suitable for thin plate materials with different sizes. The other method is that the bending section of the workpiece is separately punched and then spliced with the straight section through spot welding, errors are produced in the splicing process of the method, the subsequent manual shape correcting process is added, the efficiency is influenced, and the final product also has the seam which cannot be eliminated, so that the appearance and the function of the product are influenced. Chinese patent publication No. CN204486517U discloses a manual sheet bending apparatus in which 3 work rolls are fixed by frame bodies on both sides, one of which is adjustable up and down in the upper middle part and the other two of which are fixed in the lower part. The working principle of the device is the same as that of a three-roller plate bending machine, the radius of a rolled plate is controlled by adjusting an upper roller up and down, and the bending is carried out by rotating a driving roller. The device has a simple structure, and can process cylindrical workpieces with different radiuses. However, the device also has the limitation of a three-roller plate bending machine, namely the feeding angle is not easy to control, and the plate can be ensured to vertically enter the device by measurement and calculation by operators with abundant experience. And the device needs to be pre-bent and then can be rolled, so that the flat and straight section of the workpiece is difficult to control not to be deformed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a sheet metal bending apparatus.

The utility model discloses a following technical scheme can realize.

The utility model provides a sheet metal bending apparatus, including base, crooked lever, fixed dabber, pin, arbitrary one in fixed dabber and the pin is established on the base, and another is established on crooked lever, and the cooperation is connected between fixed dabber and the pin, be equipped with the baffle on the base, be equipped with rotatory last the pressing shaft of crooked lever.

The fixed mandrel is matched with the pin for positioning, the baffle plate is used for positioning the workpiece, and the rotary pressing shaft rotates around the fixed mandrel, so that the bending forming of the metal workpiece is completed, and the operation is convenient. The device has simpler structure and low manufacturing cost, and the bending radius of the workpiece can be controlled only by changing the diameter of the fixed mandrel.

Further, a bearing is sleeved outside the rotating pressing shaft. The rotary pressing shaft rotates around the fixed core shaft, the bearing rolls along the surface of the workpiece, sliding friction force is almost eliminated, the bending process is smooth, the workpiece is free of displacement, and errors are reduced.

The fixed mandrel is fixed on the base, and the pin is fixed on the bending lever. Compared with a connection mode that the fixed mandrel is fixed on the bending lever, the fixed mandrel and the workpiece do not move relatively, so that the workpiece displacement is avoided, and the error is reduced.

The fit clearance between the fixed mandrel and the pin is 0.05-0.5 mm. Within the range, the bending radius error of the workpiece is within the range of 0.5mm, the performance of the workpiece is not influenced, and meanwhile, the fixed mandrel and the pin cannot be separated and distorted due to overlarge clearance, and cannot be jammed and difficult to rotate due to too tight fit.

The distance between the axes of the rotating pressing shaft and the pin is 0.2-2.2 mm larger than the sum of the outer radiuses of the rotating pressing shaft and the fixed mandrel. To reduce the bending error of the workpiece and is suitable for steel plates with the thickness of less than 0.2 mm.

The height of the fixed mandrel and the height of the rotary pressing shaft are within 110 mm. When the width of the material is larger than 110mm, the error is large, the rejection rate is high, the width of the plate is limited by the arrangement, and the rejection rate is reduced.

The beneficial effects of the utility model reside in that:

in conclusion, the bending device can be used for bending a thin plate, and only one time of rotating the bending lever is needed to finish one workpiece, so that the operation is convenient; compared with a three-roller manual thin plate bending device, the device has simpler structure; the device low in cost only needs to change the diameter of fixed dabber, can control work piece bending radius, is convenient for carry out serialization production to the work piece bending dimension of needs, compares in special mould, greatly reduced the cost, and need not to divide into several parts with the work piece and splices.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of the first operation step of the present invention;

FIG. 3 is a schematic structural diagram of the second operation step of the present invention;

FIG. 4 is a schematic structural diagram of operation step three of the present invention;

fig. 5 is a schematic structural diagram of operation step four of the present invention.

In the figure: 1-a base; 11-a baffle plate; 2-bending the lever; 21-rotating the pressing shaft; 22-a bearing; 3-fixing the mandrel; 4-a dowel; 5-workpiece.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1, the utility model provides a sheet bending device, including base 1, crooked lever 2, fixed core axle 3, pin 4, arbitrary one in fixed core axle 3 and the pin 4 is established on base 1, and another is established on crooked lever 2, and the cooperation is connected between fixed core axle 3 and the pin 4, be equipped with baffle 11 on the base 1, be equipped with rotatory last pressure shaft 21 on the crooked lever 2.

The fixed mandrel 3 is matched with the pin 4 for positioning, the baffle 11 is used for positioning the workpiece 5, and the rotary pressing shaft 21 rotates around the fixed mandrel 3, so that the bending forming of the metal workpiece 5 is completed, and the operation is convenient. The device has simpler structure and low manufacturing cost, and the bending radius of the workpiece 5 can be controlled only by changing the diameter of the fixed mandrel 3.

Further, a bearing 22 is sleeved outside the rotating pressing shaft 21. The rotary pressing shaft 21 rotates around the fixed mandrel 3, the bearing 22 rolls along the surface of the workpiece 5, sliding friction force is almost eliminated, the bending process is smooth, the workpiece 5 does not displace, and errors are reduced.

The fixed mandrel 3 is fixed on the base 1, and the pin 4 is fixed on the bending lever 2. Compared with the connection mode that the fixed mandrel 3 is fixed on the bending lever 2, the fixed mandrel 3 and the workpiece 5 do not move relatively, so that the workpiece 5 is prevented from moving, and errors are reduced.

The fit clearance between the fixed mandrel 3 and the pin 4 is 0.05-0.5 mm. Within this range, the bending radius error of the workpiece 5 is within 0.5mm, the performance is not affected, and the fixed mandrel 3 and the pin 4 are not separated and distorted due to too large gap, and are not jammed and difficult to rotate due to too tight fit.

The distance between the axis center of the rotating pressing shaft 21 and the pin 4 is 0.2-2.2 mm larger than the sum of the outer radii of the rotating pressing shaft 21 and the fixed mandrel 3. To reduce the bending error of the workpiece 5 and to be applied to a steel sheet of 0.2mm or less.

The height of the fixed mandrel 3 and the rotary pressing shaft 21 is within 110 mm. When the width of the material is larger than 110mm, the error is large, the rejection rate is high, the width of the plate is limited by the arrangement, and the rejection rate is reduced.

The base 1 and the baffle 11, the bending lever 2 and the rotating pressing shaft 21, and the fixed core shaft 3 and the base 1 can be connected by pins or welded.

The utility model discloses during the use, the step is shown as figure 2 ~ 5: firstly, a workpiece 5 is placed on a base 1 according to the figure 2 and is positioned by a baffle plate 11, then a bending lever 2 is positioned with the base 1 according to the figure 3, namely a pin 4 is matched with a fixed mandrel 3, and finally, according to the figure 4, the bending lever 2 is held to rotate relative to the base 1, and the workpiece 5 is taken down when the workpiece is rotated to the required size. Fig. 5 shows an example of the workpiece 5 after bending.

Claims

1. A sheet bending apparatus characterized by: including base (1), crooked lever (2), fixed dabber (3), pin (4), establish on base (1) in arbitrary one in fixed dabber (3) and pin (4), another is established on crooked lever (2), and the cooperation is connected between fixed dabber (3) and pin (4), be equipped with baffle (11) on base (1), be equipped with rotatory pressure axle (21) on crooked lever (2).

2. The sheet bending apparatus according to claim 1, wherein: and a bearing (22) is sleeved outside the rotary pressing shaft (21).

3. The sheet bending apparatus according to claim 1, wherein: the fixed mandrel (3) is fixed on the base (1), and the pin (4) is fixed on the bending lever (2).

4. The sheet bending apparatus according to claim 1, wherein: the fit clearance between the fixed mandrel (3) and the pin (4) is 0.05-0.5 mm.

5. The sheet bending apparatus according to claim 1, wherein: the distance between the rotating pressing shaft (21) and the pin (4) is 0.2-2.2 mm larger than the sum of the outer radii of the rotating pressing shaft (21) and the fixed mandrel (3).

6. The sheet bending apparatus according to claim 1, wherein: the height of the fixed mandrel (3) and the height of the rotary pressing shaft (21) are within 110 mm.